Two recent members of an industry committee that helps the Bank of England oversee London's foreign-exchange markets have been put on paid leaves of absence from their employers amid a global probe into potential currency manipulation, according to people familiar with the matter.

Citigroup Inc.'s head of European "spot" foreign-exchange trading, Rohan Ramchandani, agreed Wednesday to take a paid leave of absence, according to a person with knowledge of the matter. Additionally, Richard Usher, J.P. Morgan Chase...